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3 years ago

Which of the following would be a phenotype?

Biology

2 answers:

skelet666 [1.2K]3 years ago

5 0

phenotype is observable so A

Stolb23 [73]3 years ago

4 0

I think it has to be D definitely because an upturned nose may be a result of a genetic mutation threw the years do to a dry environment,

Hope this helps!

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In 1985 a biologist counted 750 pine trees in a 250 hectare forest. Using similar counting techniques, the biologist counted 1,2

Alisiya [41]

Answer:

Suppose that we have a given function f(x)

The average rate of change of the function between two values x₁ and x₂ is given by:

$r = \frac{f(x_2) - f(x_1)}{x_2 - x_1}$

a) We want to find the average (rate) of change on the size of population from 1985 to 1995.

We have that:

f(1985) = 750

f(1995) = 1500

Then we have:

$r = \frac{1500 - 750}{1995 - 1985} = 750/10 = 75$

This means that the population of trees increases, in average, at a rate of 75 trees per year.

b) What is the density of trees each year that they were counted?

This will be equal to the quotient between the number of trees and the area.

1985: number of trees = 750 pines

area = 250 ha

Then the density is:

D(1985) = (750 pines)/(250 ha) = 3 pines/ha

So 1985, there were 3 pines per hectare.

1990: number of trees = 1250 pines

area = 250 ha

Then the density is:

D(1990) = (1250 pines)/(250 ha) = 5 pines/ha

1995: number of trees = 1500 pines

area = 250 ha

The density is:

D(1995) = (1500 pines)/(250 ha) = 6 pines/ha

3) now we want to get the average change between 1985 and 1995 in the density, this will be:

$r = \frac{D(1995) - D(1885)}{1995 - 1985} = \frac{6 pines/ha - 3pines/ha}{10} = 0.3 pines/ha$

So, on average, each year the number of pines per hectare increases by 0.3

7 0

3 years ago

Energy can be classified into..

lara31 [8.8K]

B is correct! Renewable and non

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4 years ago

What is true about all real machines?

kvv77 [185]

Answer:

I think it's the first one

Explanation:

I don't know though so don't trust me unless someone else says the same thing

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3 years ago

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suppose you use a microscope yo look at a skin of a n onion what struturce will you see that would not be found in your skin cel

Softa [21]

Onion skin is a plant cell. And your skin cell is a animal cell.
Basically as simple all the structures in animal cell can be found in plant cells. But plant cells has some extra structure and part where doesn't exist in animal cells.
In animal cell, it contains a cytoplasm, nucleus and a cell membrane.
But in plant cell, they have chloroplast, cell wall and vacuole in additional.

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4 years ago

Three month old Nolan is no longer interested in a puppet head this is probably because he’s became blank

Vika [28.1K]

An adult , or mature i think sry if not the answer you were looking for

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3 years ago

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